diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-08 13:48:45 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-03 12:10:23 +0200 |
| commit | 9f30a1694c6c1cc92df5777b6a17032e19250bbc (patch) | |
| tree | bf0b450177c9aedd36a4b959c5c62c1e6d142fae | |
| parent | af1bfe5bc3102cebb35c64a69e115268a2b42fc1 (diff) | |
| download | ffmpeg-9f30a1694c6c1cc92df5777b6a17032e19250bbc.tar.gz | |
avcodec/ralf: Fix integer overflow in apply_lpc()
Fixes: signed integer overflow: 2147482897 + 2048 cannot be represented in type 'int'
Fixes: 19240/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5743240326414336
Fixes: 19869/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5150136636538880
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fd313d8cf8368918882b6de0880e44ae25cc7394)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ralf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index d8f1803086..15be19b526 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -330,7 +330,7 @@ static void apply_lpc(RALFContext *ctx, int ch, int length, int bits) acc = (acc + bias - 1) >> ctx->filter_bits; acc = FFMAX(acc, min_clip); } else { - acc = (acc + bias) >> ctx->filter_bits; + acc = ((unsigned)acc + bias) >> ctx->filter_bits; acc = FFMIN(acc, max_clip); } audio[i] += acc; |